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RATENTED SEPT. 4, 1906. w. m. VENABLE.

GARBAGE OREMATORY.

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No. 830,027. PATENTBD SEPT. 4, 1906.

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GARBAGE OREMATOBY.

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I Inventor;

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WILLIAM MAYO VENABLE, OF NEW YORK. N. Y.

GARBAGE-OREMATORY.

Specification of Letters Patent.

Patented Sept. 4, 1906.

Application filed October 14, 1905. Serial No. 282,706.

1'0 all whom it may concern.-

Be it known that I, WILLIAM MAYO VEN- ABLE, a citizen of the United States, residin at NewnYork city, county of New York, an

State. of New 'York, have invented certain new and useful Improvements in Garbage- (rematories, of which the following is a specification.

My invention relates to improvements in creinatories in which garbage or refuse is burned on grates with an updraft either with or without previous drying.

In burning garbage and other refuse there are three distinct processes that must be carried out. One is the eva oration of the Water contained in the gar age, the second is the superheating of the vapors distilled out while water is being evaporated, so that they will not cause offensive odors when discharged from thecrematory, and the third' is the actual combustion of the portion of the garbage that is capable of oxidation with air. Inthe present state of the art these processes are more or less confused, or when separately considered they are carried on with an unnecessary complication of apparatus.

In general, the object of my improvements is to accomplish the complete burning, with out oll'ensive odors, of garbage or refuse of any kindjwhether wet or dry, in a single furnace, with the utmost "economy in construction. In particular, this involves the four subordinate objects: first, to provide for a variable number of fires where fuel other than garbage may be burned effectively for drying garbage and cremating odors, such number to be used as the condition of the garbage may warrant; second, to secure complete oxidation of the combustible por tion of the garbage by burning it, when sufficiently dry, on grates provided with an u draft; third, to secure large capacity of tlie crematory by providing a large area of gratesurface that may be used for drying refuse, for containing refuse preliminary to burning it, or for actually burning refuse or fuel, as may be most advantageous at any stage in the process, and, fourth, tosecure economy in the amount of labor required for stoking the garbage in the crematory.

The accompanying drawings illustrate my invention, in which Figure 1 is a longitudinal vertical section through the crematory; Fig. 2, a transverse section on the line A B of Fig. l, and Fig. 3 a transverse section on the line D of Fig. 1.

Fig. 4 shows an alternate construction of the bar 12 shown in Fig. 3.

As shown in the figures, 1 is the fire-brick lining of the crematory; 2, a masonry pro tecting-wall surrounding same; 3, the interior of combustion-chamber 4, feed-holes for introducing garbage or refuse; 5, grates for burning same; 6, ash-pits below 5; 7, openings communicating with 6; 8, openings for stoking the fires on 5; 9, a second combustion chamber or flue affording communication with the stack or other place for disposin of the gases of combustion, (not shown,) an v an openin between 3 and 9. The openin 4 is provide with covers. (Not shown.) T e openings 7 and 8 are provided with doors 24 and 25 capable of being closed at will.

Floors for receiving, drying, and stoking the refuse down upon the grates 5 are shownby 11 and 12. These are made up of hollow bars of triangular cross-section, 11 being adapted to be rotated by a tool inserted'in its end from the outside of the crematory. 13 and 14 are bearings for the ends of 11, 13 also supporting one end of 12. The other end of 12 rests upon a portion'of the lining 1. The parts 11, 12, 13, and 14 are removable without necessitating any change inthe lining 1.

15 re resents openings for access to 3, above the bars 11 and 12. vided with doors 23.

16 and 17 are openings from the exterior of the furnace to the interior of the bars 11 and 12 through the fire-brick lining 1.

18 represents openings from the rear of the bars 11 and 12 into an air-space 19 be tween the lining 1 and a portion of the protecting-wall 2.

20 represents openings from 19 into the interior of the crematory 3, preferably at the end of same, as shown.

Instead of the construction shown in Fi 3 the openings 20 may be omitted and bars 22, with openings 21, as shown in Fig. 4, substituted for the bars 12. (Shown in Fig. 3.) I may also employ an iron jacket to protect the cermatory instead of the masonry protecting-Wall 2.

The operation of the crematory is as follows: Materials to be cremated are introduced through the openings 4 or 15 and spread upon the floor formed by 11 and 12.

Fires are kindled on certain of the grates 5, in case wet garbage is to be burned upon the grates nearest.to the passage 10, in order to cremate foul odors on their passage into the They are prosecondary combustion-chamber 9, and as many others as may be necessary to produce the heat required to dry the garbage on the bars 11 and 12. As the garbage becomes dry enough it is stoked down upon the grates 5, where desired, and burned with an updraft either on top of fuel-fires or on grates where fuel-fires had not been kindled. Air is ad-- mitted to such sections of the grates as may berequired by the openings 7 -or excluded by closing the doors thereto. In this manner the fires, both of garba e and of fuel, on the grates 5 may be contro led at will. Air circulates through the hollow bars as follows: When the openings 20 are employed, as shown in Fig. 3, air enters at 16 and 17,

' passes through 11 and 12, the rear bearing 13, the openings 18, into the space 19, thence through the openings 20 into one end of the combustion-chamber 3 above the bars 11 and 12, upon which arbage is placed, over the garba e to the ot er end of the combustion-cham er, thence under the bars, mingling with the fires on the grates 5, and with them to the point of disposal. When the openings 20 are omitted and the bars 22, with holes 21, are em loyed, the air enters at 16,

passes through t e bars 11, the bearings 13, nto the-bars 22, and through the holes 21 into the combustion-chamber immediately above the grates 5, and thence as reviously described. In either case the eat communicated to the air by the bars and 11 is utilized to assist-in maintaining a high temperature in the combustion-chamber 3 where it is needed.

For burning certain kinds of wastes the drying-floor and the openings may be omitted, such drying as is necessary being done on the ates 5.

Any su'ita le disposal may be made of the gases issuing from 9, such as re aining their surplus heat by use of a stea oiler, if desired. Artificial draft of any kind or natural draft may be employed at discretion.

I am aware that hollow bars have been used in crematories before; but such bars have not been constructed as those I use nor have they combined the several functions for which I use them. 1

What I claim, and desire to protect by Letters Patent, is as follows;

1. In a crematory an elongated combustion-chamber/divided horizontally into an upper portion and a lower portion by a garbage-r'eceiving platform, the entire floorof the combustion-chamber being formed by a number of sections of updraft-grates sepas rated from one another by partition-walls extending tothe bottom of each ashpit beneath, in combination with means for-controlling at will the admission of air to each ash-pit.

2. In a crematory, a series of updraftgrates, each provided with a separate ash-pit, to any of which pits and grates air may be admitted or excluded at will; all of said grates surmounted by one combustion-chamber; in combination with a platform mounted horizontally within the combustion-chamber, and adapted to receive the garbage and to stoke it down upon the grates below, as desired.

3. In a crematory, a series of updraftgrates, each rate provided with an ash-pit. 

